import { XRManagerExtended } from "../../../XRManagerExtended";
import { XRTrackableFeature } from "../XRTrackableFeature";
import { XRReferenceImage } from "./XRReferenceImage";
import { XRRequestImage } from "./XRRequestImage";
import { XRTrackedImage } from "./XRTrackedImage";
/**
 * The manager of XR image tracking.
 */
export declare class XRImageTracking extends XRTrackableFeature<XRTrackedImage, XRRequestImage> {
    private _trackingImages;
    /**
     * The image to tracking.
     */
    get trackingImages(): readonly XRReferenceImage[];
    /**
     * The tracked images.
     */
    get trackedImages(): readonly XRTrackedImage[];
    /**
     * @param xrManager - The xr manager
     * @param trackingImages - The images to be tracked
     */
    constructor(xrManager: XRManagerExtended, trackingImages: XRReferenceImage[]);
    protected _generateTracked(): XRTrackedImage;
}